CTICasesMyocardial Bridging
Imaging findings
Coronary CTA in a patient with hypertrophic cardiomyopathy (HCM) demonstrates a single coronary artery arising from the right coronary sinus. The left coronary artery takes a septal course and exhibits a very long, deep myocardial bridging course through the hypertrophied interventricular septum, before emerging in the distal interventricular groove.
Key takeaways
Myocardial bridging is a congenital anomaly where a segment of a coronary artery (typically the LAD) runs within the myocardium instead of the epicardial fat. While usually benign, bridging can cause myocardial ischemia, particularly in patients with hypertrophic cardiomyopathy (HCM) where the thickened muscle compresses the artery during systole, leading to angina or arrhythmias.
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